NASA NTRS · 19710000138
Microwave cryogenic thermal-noise standards
Abstract
Field operational waveguide noise standard with nominal noise temperature of 78.09 plus/minus 0.12 deg K is calibrated more precisely than before. Calibration technique applies to various disciplines such as microwave radiometry, antenna temperature and loss measurement, and low-noise amplifier performance evaluation.
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Stelzried, C. T.. 1971-05-01. Microwave cryogenic thermal-noise standards. https://ntrs.nasa.gov/citations/19710000138
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